Note 4 - Common Stock (Details Textual) - USD ($)			1 Months Ended		3 Months Ended
	Mar. 31, 2019	Mar. 26, 2019	Feb. 28, 2019	Nov. 30, 2017	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Common Stock, Shares Authorized	100,000,000				100,000,000		100,000,000
Common Stock, Shares Outstanding and Reserved	47,989,122				47,989,122
Common Stock, Shares, Issued, Total	39,568,524				39,568,524		39,117,524
Common Stock, Shares Subscribed but Unissued	2,627,305				2,627,305
Proceeds from Issuance of Private Placement					$ 25,000
Dividends, Total					$ 0
Finders [Member]
Shares Issued, Price Per Share		$ 0.25
Stock Issued During Period, Shares, Issued for Services		115,000
Stock Issued During Period, Value, Issued for Services		$ 28,750
Warrant [Member]
Common Stock, Capital Shares Reserved for Future Issuance	452,617				452,617
Nonqualified Options [Member]
Common Stock, Capital Shares Reserved for Future Issuance	3,995,000				3,995,000
Qualified Options [Member]
Common Stock, Capital Shares Reserved for Future Issuance	950,000				950,000
Private Placement [Member]
Common Stock, Capital Shares Reserved for Future Issuance	300,000				300,000
Private Placement 2016-2 [Member]
Proceeds from Issuance of Private Placement				$ 56,225
Private Placement 2016-3 [Member]
Stock Issued During Period, Shares, New Issues			200,000
Shares Issued, Price Per Share			$ 0.25
Officer [Member]
Common Stock, Capital Shares Reserved for Future Issuance	75,462				75,462
Issued To Employees [Member]
Common Stock, Capital Shares Reserved for Future Issuance	4,043				4,043
Issued To Consultants [Member]
Common Stock, Capital Shares Reserved for Future Issuance	16,171				16,171
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture, Total			24,000
Chief Executive Officer [Member]
Deferred Compensation Arrangement with Individual, Shares Issued	100,000
Vice President [Member]
Deferred Compensation Arrangement with Individual, Shares Issued	12,000